| 22101 | Petroleum Exploration Company LTD., Limited | Breckenridge, TX 76424 | Oil & Gas Operator | Jul 2026 |
| 22102 | Petroleum Futures-Chapman Oil | | Oil & Gas Operator | Jul 1981 |
| 22103 | Petroleum Inc | Wichita, KS 67202 | Oil & Gas Operator | Oct 2021 |
| 22104 | Petroleum Incorp | | Oil & Gas Operator | Apr 1993 |
| 22105 | Petroleum International, Inc. | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2000 |
| 22106 | Petroleum Investment Inc | Oklahoma City, OK 73118 | Oil & Gas Operator | Nov 1998 |
| 22107 | Petroleum Investments, Inc | Shreveport, LA 71101 | Oil & Gas Operator | Dec 1977 |
| 22108 | Petroleum Land Company | Abilene, TX 79606 | Oil & Gas Operator | May 2000 |
| 22109 | Petroleum Manage | | Oil & Gas Operator | Oct 1994 |
| 22110 | Petroleum Management Int'L, Inc. | Sugar Land, TX 77487 | Oil & Gas Operator | Oct 1993 |
| 22111 | Petroleum Management LLC | Platteville, CO 80651 | Oil & Gas Operator | Mar 2011 |
| 22112 | Petroleum Management Prof Inc | Oklahoma City, OK 73120-1848 | Oil & Gas Operator | Apr 2009 |
| 22113 | Petroleum Management, Inc. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Sep 2026 |
| 22114 | Petroleum Prod. MGMT | | Oil Operator | Nov 1995 |
| 22115 | Petroleum Produc | | Oil & Gas Operator | Dec 1996 |
| 22116 | Petroleum Production Corporation | Rantoul, KS 66079 | Oil Operator | Feb 2024 |
| 22117 | Petroleum Production Engineering | Fulton, TX 78358 | Oil Operator | Feb 2019 |
| 22118 | Petroleum Production Management Inc | Shawnee Mission, KS 66202 | Oil & Gas Operator | Nov 2021 |
| 22119 | Petroleum Production MGMT., Inc. | Kansas City, MO 64112 | Oil & Gas Operator | Sep 2026 |
| 22120 | Petroleum Products Inc | | Oil Operator | Jun 1996 |
| 22121 | Petroleum Proper | | Oil & Gas Operator | Nov 1995 |
| 22122 | Petroleum Properties Co Inc | Tulsa, OK 74132-4010 | Oil & Gas Operator | Sep 2012 |
| 22123 | Petroleum Properties MGMT Co LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Aug 2005 |
| 22124 | Petroleum Properties MGMT Corp | | Oil & Gas Operator | Aug 1990 |
| 22125 | Petroleum Properties MGMT. Co. | Oklahoma City, OK 73118 | Oil & Gas Operator | Dec 2014 |
| 22126 | Petroleum Property MGMT, Inc (A) | Fort Worth, TX 76101 | Oil & Gas Operator | May 1994 |
| 22127 | Petroleum Property Services, Inc. | Wichita, KS 67202 | Oil & Gas Operator | May 2026 |
| 22128 | Petroleum Recovery & Expl Inc. | | Oil Operator | Oct 1984 |
| 22129 | Petroleum Recovery Systems, L.C. | Houston, TX 77024 | Oil Operator | Sep 2026 |
| 22130 | Petroleum Reserve Corporation | Plymouth MTNG, PA 19462 | Oil & Gas Operator | May 2008 |
| 22131 | Petroleum Resource Management Co | Fort Worth, TX 76107 | Oil & Gas Operator | Jan 2024 |
| 22132 | Petroleum Resource Management Corp | Denver, CO 80203 | Oil & Gas Operator | Jun 2026 |
| 22133 | Petroleum Resource MGMT Co TX | | Oil & Gas Operator | Sep 2020 |
| 22134 | Petroleum Resources Co | Wichita, KS 67206 | Oil & Gas Operator | May 2000 |
| 22135 | Petroleum Resources MGMT Corp. | | Oil & Gas Operator | Mar 2002 |
| 22136 | Petroleum Resources, LLC | | Oil & Gas Operator | Dec 2021 |
| 22137 | Petroleum Service Partners, Inc. | Indiana, PA 157010000 | Oil & Gas Operator | Dec 2021 |
| 22138 | Petroleum Technical Services Co. | Midland, TX 79707 | Oil & Gas Operator | Dec 2004 |
| 22139 | Petroleum Techno | | Oil & Gas Operator | Dec 1996 |
| 22140 | Petroleum Technologies, Inc. | Kansas City, MO 64112 | Oil & Gas Operator | May 2026 |
| 22141 | Petroleum Venture Capitol Corp | | Oil Operator | Jun 1980 |
| 22142 | Petrolia Energy Corporation | Pearland, TX 77581 | Oil Operator | Jan 2024 |
| 22143 | Petrolia Group, L.L.C. | Katy, TX 77449 | Oil & Gas Operator | Sep 2026 |
| 22144 | Petrolux Operating LLC | Frisco, TX 75034 | Oil Operator | Sep 2026 |
| 22145 | Petromac, Inc. | Onalaska, TX 77360 | Oil & Gas Operator | Sep 2026 |
| 22146 | Petromark Energy LLC | Oklahoma City, OK 73116-7634 | Oil & Gas Operator | Jun 2000 |
| 22147 | Petromark Resources Company | Tulsa, OK 74136 | Oil & Gas Operator | Sep 1993 |
| 22148 | Petromax Oil And Gas Inc | | Oil & Gas Operator | Dec 1988 |
| 22149 | Petromerica Operating LLC | Oklahoma City, OK 73102-4613 | Oil Operator | Jun 2026 |
| 22150 | Petrominerals Corp. | | Oil & Gas Operator | Dec 2003 |
| 22151 | Petromining, Inc. | Plano, TX 75026 | Oil & Gas Operator | Sep 2026 |
| 22152 | Petron Development Company | | Oil & Gas Operator | Sep 2020 |
| 22153 | Petron Energy Inc | Dallas, TX 75252 | Oil & Gas Operator | Sep 2026 |
| 22154 | Petron Oil Company | Missouri City, TX 77489 | Oil & Gas Operator | Sep 2026 |
| 22155 | Petronomics Petroleum, Inc. | Austin, TX 78734 | Oil & Gas Operator | Jan 1995 |
| 22156 | Petronomics, Inc. | Houston, TX 77074 | Oil & Gas Operator | Aug 2003 |
| 22157 | Petronova, LLC | | Gas Operator | Jul 2014 |
| 22158 | Petroplex Energy Inc. | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |
| 22159 | Petroplex Equipment, Inc. | Midland, TX 79701 | Oil & Gas Operator | May 2019 |
| 22160 | Petropoint Energy Operating, LLC | Houston, TX 77098 | Oil & Gas Operator | Sep 2026 |
| 22161 | Petroprize | | Oil & Gas Operator | Jul 2026 |
| 22162 | Petropro Energy Partners, L.P. | Houston, TX 77024 | Oil & Gas Operator | Jan 2013 |
| 22163 | Petropro Petroleum LLC | | Oil Operator | May 2026 |
| 22164 | Petroquest Energy, Inc. | Lafayette, LA 70505 | Oil & Gas Operator | Feb 2001 |
| 22165 | Petroquest Energy, L.L.C. | Lafayette, LA 70505 | Oil & Gas Operator | Sep 2026 |
| 22166 | Petroquest Exploration, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Mar 2008 |
| 22167 | Petroquest Oil & Gas LLC | Wewoka, OK 74884 | Oil & Gas Operator | Jul 2026 |
| 22168 | Petroquest, LLC | El Dorado, AR 71730 | Oil & Gas Operator | Jan 2025 |
| 22169 | Petroreal Inc. | Temple, TX 76503 | Oil & Gas Operator | Sep 2026 |
| 22170 | Petrorep Inc | | Oil Operator | Oct 1998 |
| 22171 | Petrosantander (USA) Inc. | Houston, TX 77057 | Oil & Gas Operator | May 2026 |
| 22172 | Petrosaurus, Inc. | Somerset, TX 78069 | Oil Operator | Sep 2026 |
| 22173 | Petrosearch Operating Co, LLC | Denver, CO 80202 | Oil & Gas Operator | Sep 2026 |
| 22174 | Petrosearch, Inc. | | Oil Operator | Jul 1992 |
| 22175 | Petroshale (Us) Inc. | | Oil & Gas Operator | Jun 2026 |
| 22176 | Petroshare Corporation | | Oil & Gas Operator | Jan 2024 |
| 22177 | Petrosil Resources Inc. | | Oil & Gas Operator | Oct 1981 |
| 22178 | Petrosource Energy Corporation | Fort Worth, TX 76112 | Oil & Gas Operator | Sep 2026 |
| 22179 | Petrosource Production Co. L.P. | Midland, TX 79701 | Oil & Gas Operator | Nov 2007 |
| 22180 | Petrosource Production Co., LLC | Midland, TX 79705 | Oil & Gas Operator | Sep 2026 |
| 22181 | Petrotec LLC | The Woodlands, TX 77382 | Oil & Gas Operator | Feb 2017 |
| 22182 | Petrotech Resources Corp | Glasgow, KY 42141 | Oil & Gas Operator | Dec 2024 |
| 22183 | Petrotex Engineering Company | Cypress, TX 77429 | Oil & Gas Operator | Sep 2026 |
| 22184 | Petrotex Louisiana Company | | Oil & Gas Operator | Aug 1998 |
| 22185 | Petrotex, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Aug 2003 |
| 22186 | Petrotx Operating, LLC | Kingwood, TX 77339 | Oil & Gas Operator | Sep 2026 |
| 22187 | Petroventures In | | Oil Operator | Apr 1987 |
| 22188 | Petrovybe Opco LLC | Plano, TX 75093 | Oil & Gas Operator | Sep 2026 |
| 22189 | Petrowater Solutions LLC | Oklahoma City, OK 73102-5643 | Oil Operator | Aug 2016 |
| 22190 | Petrowest | | Oil & Gas Operator | Dec 2001 |
| 22191 | Petrowest Energy Co Inc | | Oil & Gas Operator | Dec 2025 |
| 22192 | Petrox Petroleum Company | Great Falls, MT 59403-0989 | Oil Operator | Jun 2026 |
| 22193 | Petrox Resources Inc | Meeker, CO 81641 | Oil & Gas Operator | Jul 2026 |
| 22194 | Petrox, Inc | Streetsboro, OH 44241 | Oil & Gas Operator | Dec 2025 |
| 22195 | Petrus Oil Company, L.P. | | Oil & Gas Operator | Dec 1989 |
| 22196 | Petrus Operating Co., Inc. | | Oil & Gas Operator | Dec 1986 |
| 22197 | Petsec Energy Inc. | | Oil & Gas Operator | Sep 2012 |
| 22198 | Pettigrew Pumping Service Inc | Ravenna, OH 44266 | Oil & Gas Operator | Dec 2025 |
| 22199 | Pettit Charles Oil Company | Okmulgee, OK 74447-4226 | Oil & Gas Operator | Sep 2018 |
| 22200 | Petx Operating LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |